Display device

Abstract

A display device for a mobile vehicle comprises at least one light emitting part, an emission angle adjustment part, and a light control film part. The emission angle adjustment part is configured to transmit light from the at least one light emitting part therethrough while adjusting an emission angle of the light from the at least one light emitting part. The light control film part is configured to switch between a transmitting state to transmit light from the emission angle adjustment part therethrough and a diffusing state to diffuse the light from the emission angle adjustment part. The emission angle adjustment part has at least one louver portion that is made of reflective material and is configured to adjust the emission angle of the light from the at least one light emitting part.

What is claimed is: 
     
         1 . A display device for a mobile vehicle, the display device comprising:
 at least one light emitting part configured to emit light;   an emission angle adjustment part configured to transmit the light from the at least one light emitting part therethrough while adjusting an emission angle of the light from the at least one light emitting part; and   a light control film part arranged to sandwich the emission angle adjustment part between the at least one light emitting part and the light control film part in a first direction of the display device, the light control film part being configured to switch between a transmitting state to transmit light from the emission angle adjustment part therethrough and a diffusing state to diffuse the light from the emission angle adjustment part,   the emission angle adjustment part having at least one louver portion that is made of reflective material and is configured to adjust the emission angle of the light from the at least one light emitting part.   
     
     
         2 . The display device according to  claim 1 , wherein
 the at least one louver portion is inclined at a predetermined angle relative to the first direction to direct the light from the at least one light emitting part toward one side of a second direction of the display device that is perpendicular to the first direction.   
     
     
         3 . The display device according to  claim 2 , wherein
 the at least one louver portion is inclined to direct the light from the at least one light emitting part laterally away from a driver seat of the mobile vehicle while the display device is mounted to the mobile vehicle.   
     
     
         4 . The display device according to  claim 2 , wherein
 the at least one louver portion is inclined laterally away from a driver seat of the mobile vehicle as moving toward a front side of the display device along the first direction while the display device is mounted to the mobile vehicle.   
     
     
         5 . The display device according to  claim 2 , wherein
 the at least one louver portion is inclined laterally toward a passenger seat of the mobile vehicle as moving toward a front side of the display device along the first direction while the display device is mounted to the mobile vehicle.   
     
     
         6 . The display device according to  claim 2 , wherein
 the predetermined angle is an angle more than or equal to 50 degrees and less than or equal to 60 degrees.   
     
     
         7 . The display device according to  claim 2 , wherein
 the at least one louver portion is inclined to control distribution of an emission light amount of light from the light control film part.   
     
     
         8 . The display device according to  claim 7 , wherein
 the at least one louver portion is inclined such that a peak of the distribution of the emission light amount is laterally offset from a driver seat of the mobile vehicle while the display device is mounted to the mobile vehicle.   
     
     
         9 . The display device according to  claim 7 , wherein
 the at least one louver portion is inclined such that a peak of the distribution of the emission light amount is laterally located away from a driver seat of the mobile vehicle with respect to a passenger seat of the mobile vehicle while the display device is mounted to the mobile vehicle.   
     
     
         10 . The display device according to  claim 1 , wherein
 the at least one louver portion includes a plurality of louver portions that are arranged relative to each other in a second direction of the display device that is perpendicular to the first direction.   
     
     
         11 . The display device according to  claim 10 , wherein
 the louver portions are inclined at approximately a same predetermined angle relative to the first direction.   
     
     
         12 . The display device according to  claim 10 , wherein
 the louver portions includes a first louver portion that is inclined at a first predetermined angle relative to the first direction and a second louver portion that is inclined at a second predetermined angle relative to the first direction, the first predetermined angle and the second predetermined angle being different from each other.   
     
     
         13 . The display device according to  claim 12 , wherein
 the first louver portion and the second louver portion are inclined toward a same side of the second direction as moving toward a front side of the display device.   
     
     
         14 . The display device according to  claim 12 , wherein
 the first louver portion is laterally located closer to a drive seat of the mobile vehicle than the second louver portion, and   the first predetermined angle is greater than the second predetermined angle.   
     
     
         15 . The display device according to  claim 12 , wherein
 the first louver portion and the second louver portion are inclined away from each other as moving toward a front side of the display device.   
     
     
         16 . The display device according to  claim 12 , wherein
 the first louver portion and the second louver portion are inclined toward each other as moving toward a front side of the display device.   
     
     
         17 . The display device according to  claim 10 , wherein
 the emission angle adjustment part has a sheet shape and further includes a translucent material that is disposed between adjacent louver portions of the louver portions.   
     
     
         18 . The display device according to  claim 10 , wherein
 the louver portions are arranged such that adjacent louver portions of the louver portions do not overlap each other as viewed in the first direction.   
     
     
         19 . The display device according to  claim 1 , wherein
 the at least one louver portion further includes a first reflective portion and a second reflective portion, the first reflective portion being located closer to the at least one light emitting part in the first direction than the second reflective portion and having a higher reflectance than the second reflective portion.   
     
     
         20 . The display device according to  claim 1 , wherein
 the at least one louver portion diagonally extends between opposite surfaces of the emission angle adjustment part in a linear manner.